A split magnetic stand

Abstract

The utility model relates to the field of biological medicine technology, concretely is a kind of separated magnetic stand, including four magnetic stand main body, long strip magnet block and eight fixed tubes, two groups of sample tube hole groups, two groups of fixed tube hole groups and two groups of magnet support platform groups are respectively provided on each magnetic stand main body, two groups of sample tube hole groups are sequentially distributed along the length direction of magnetic stand main body, eight fixed tubes are used to correspond to insert two groups of fixed tube hole groups, to make four magnetic stand main body connection, long strip magnet block is located between four magnetic stand main body. The utility model is around symmetrical assembly by four magnetic stand main body, realizes the around fixing of matched long strip magnet block, and when long strip magnet block is arranged in small specification tube support area or large specification tube support area, the strongest magnetic force surface of long strip magnet block can be ensured to be completely attached with sample tube, effectively reduce magnetic force loss, ensure that the attraction of magnet to the substance in sample tube reaches maximum, significantly improve magnetic separation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of biomedical technology, specifically to a detachable magnetic rack. Background Technology

[0002] In biomedical experiments, magnetic separation technology is widely used in nucleic acid extraction, protein purification, and cell separation, and the magnetic rack is one of the core pieces of equipment in this technology. However, existing magnetic racks often suffer from the following defects and shortcomings: 1. The single method of fixing the magnet makes it difficult to maximize the attraction of the magnet to the sample tube, resulting in low magnetic attraction efficiency and affecting the experimental results; 2. The structure is complex and often uses special fasteners such as screws for assembly, which makes assembly and disassembly inconvenient. In addition, the special fasteners are easy to lose, increasing the cost of experiments. 3. Poor sample tube compatibility; it is usually only compatible with a single specification of sample tube, which cannot meet the needs of using multiple specifications of sample tubes in different experimental scenarios. Utility Model Content

[0003] This invention provides a detachable magnetic frame to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A detachable magnetic frame includes four magnetic frame bodies, long strip magnets, and eight fixing tubes. Each magnetic frame body is provided with two sets of sample tube hole groups, two sets of fixing tube hole groups, and two sets of magnet support platform groups. The two sets of sample tube hole groups are distributed sequentially along the length direction of the magnetic frame body. The eight fixing tubes are used to be inserted into the two sets of fixing tube hole groups to connect the four magnetic frame bodies. The long magnetic block is located between the four magnetic frame bodies and has a first working position and a second working position. When the long magnetic block is in the first working position, it is located in a set of magnetic support platforms. When the long magnetic block is in the second working position, it is located in another set of magnetic support platforms. The four main magnetic frames are symmetrically distributed around the long strip magnet block, forming a closed loop structure.

[0005] Preferably, the two groups of sample tube holes are a large-size sample tube hole group and a small-size sample tube hole group, each of which has at least one sample tube hole. The plane where the port of the sample tube hole in the large-size sample tube hole group is located is perpendicular to the plane where the port of the sample tube hole in the small-size sample tube hole group is located. The sample tube holes in the large-size sample tube hole group and the sample tube holes in the small-size sample tube hole group correspond one-to-one and are connected.

[0006] Preferably, the two sets of magnet support platforms are a small-size tube support area and a large-size tube support area, respectively. The small-size tube support area is composed of multiple first limiting platforms and multiple first bearing platforms. The planes where the first limiting platforms are located are perpendicular to the planes where the first bearing platforms are located. The large-size tube support area is composed of multiple second limiting platforms and multiple second bearing platforms. The planes where the second limiting platforms are located are perpendicular to the planes where the second bearing platforms are located.

[0007] Preferably, the plane containing the first limiting platform is perpendicular to the plane containing the second limiting platform.

[0008] Preferably, the elongated magnet has a relatively strongest magnetic surface. When the elongated magnet is in the first working position, it is located in the support area of ​​the small-diameter tube, and the strongest magnetic surface of the elongated magnet is in contact with the first limiting platform. When the elongated magnet is in the second working position, it is located in the support area of ​​the large-diameter tube, and the strongest magnetic surface of the elongated magnet is in contact with the second limiting platform.

[0009] Preferably, the two sets of fixed tube hole groups are a first tube hole group and a second tube hole group, the first tube hole group includes tube hole one symmetrically arranged at both ends of the magnetic frame body, and the second tube hole group includes tube hole two symmetrically arranged at both ends of the magnetic frame body, and tube hole one is arranged on one side of tube hole two, and the axis of tube hole one is perpendicular to the axis of tube hole two.

[0010] Preferably, a first positioning groove is provided on a tube hole at one end of the magnetic frame body, and a first protrusion adapted to the first positioning groove is provided on a tube hole at the other end of the magnetic frame body.

[0011] Preferably, a second positioning groove is provided on the second tube hole at one end of the magnetic frame body, and a second protrusion adapted to the first positioning groove is provided on the second tube hole at the other end of the magnetic frame body.

[0012] Preferably, the second tube hole with the second positioning groove and the first tube hole with the first protrusion are both located at the same end of the magnetic frame body, and the second tube hole with the second protrusion and the first tube hole with the first positioning groove are both located at the same end of the magnetic frame body.

[0013] Preferably, the magnetic frame body is integrally formed with two sets of sample tube hole groups, two sets of fixed tube hole groups, and two sets of magnet support platform groups.

[0014] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows: In this invention, the four magnetic frame bodies are symmetrically assembled around each other to fix the matching long magnetic blocks. When the long magnetic blocks are placed in the support area of ​​small-sized tubes or large-sized tubes, it can ensure that the strongest magnetic surface of the long magnetic blocks is completely in contact with the sample tube, effectively reducing magnetic loss and ensuring that the attraction of the magnet to the substance in the sample tube is maximized, thus significantly improving the magnetic separation efficiency.

[0015] In this invention, the magnetic frame body adopts an integrated molding structure, which ensures a compact and stable structure without the need for complex splicing; and the fixing tube hole group can be adapted to commercial sample tubes without the need for additional special screws, which not only reduces experimental costs but also simplifies the assembly and disassembly process and saves operation time.

[0016] In this invention, the magnetic rack body integrates sample tube holes of two sizes, which can be adapted to sample tubes of different sizes at the same time, meeting the needs of various sample processing in biomedical experiments, eliminating the need for frequent replacement of the magnetic rack, and improving the convenience of experimental operation.

[0017] In this invention, when it is necessary to remove the sample tube, simply pull out the fixing tube on the corresponding magnetic frame body to remove the magnetic frame body, thereby achieving rapid demagnetization. There is no need to disassemble the entire device, making the operation convenient and avoiding interference to the sample caused by disassembly, thus ensuring the stability of the experimental sample. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the main structure of a single magnetic frame of this utility model.

[0020] Figure 3 This is a top view of the matching long strip magnet block of this utility model when it is in the first working position.

[0021] Figure 4 This is a cross-sectional view of the matching long strip magnet block of this utility model when it is in the first working position.

[0022] Figure 5 This is a top view of the matching long strip magnet block of this utility model when it is in the second working position.

[0023] Figure 6 This is a cross-sectional view of the matching long strip magnet block of this utility model when it is in the second working position.

[0024] Figure 7 This is a three-dimensional structural diagram of the matching long strip magnet block of this utility model.

[0025] In the diagram: 1. Main body of the magnetic frame; 2. Long bar magnet; 21. Strongest magnetic surface; 3. Fixed pipe; 4. Sample tube well group; 41. Large sample tube well group; 42. Small sample tube well group; 5. Fixed pipe hole group; 510. First pipe hole group; 511. Pipe hole one; 520. Second pipe hole group; 521. Pipe hole two; 6. Magnet support platform assembly; 610. Small-diameter pipe support area; 611. First limiting platform; 612. First bearing platform; 620. Large-diameter pipe support area; 621. Second limiting platform; 622. Second bearing platform; 7. First positioning groove; 8. First protrusion; 9. Second positioning groove; 10. Second protrusion. Detailed Implementation

[0026] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0028] like Figures 1-6 As shown, this utility model provides a detachable magnetic frame, including four magnetic frame bodies 1, a long strip magnet block 2, and eight fixing tubes 3. Each magnetic frame body 1 is provided with two sets of sample tube hole groups 4, two sets of fixing tube hole groups 5, and two sets of magnet support platform groups 6. The two sets of sample tube hole groups 4 are distributed sequentially along the length direction of the magnetic frame body 1. The inner diameter of the tube hole in the fixing tube hole group 5 is adapted to commercial sample tubes, and the eight fixing tubes 3 are used to be inserted into the two sets of fixing tube hole groups 5 to connect the four magnetic frame bodies 1. The long magnet 2 is located between the four magnetic frame bodies 1 and has a first working position and a second working position. When the long magnet 2 is in the first working position, the long magnet 2 is located in a set of magnet support platform groups 6. When the long magnet 2 is in the second working position, the long magnet 2 is located in another set of magnet support platform groups 6. The four magnetic frame bodies 1 are symmetrically distributed around the long strip magnet block 2, forming a closed ring structure.

[0029] It should be noted that the magnetic frame body 1 is integrally formed with two sets of sample tube hole groups 4, two sets of fixed tube hole groups 5, and two sets of magnet support platform groups 6, resulting in a compact and stable structure that does not require complex splicing. Furthermore, the fixed tube hole group 5 is compatible with commercially available sample tubes. Therefore, the fixed tube 3 proposed in this paper can be replaced with commercially available sample tubes without the need for additional special screws. This not only reduces experimental costs but also simplifies the assembly and disassembly process, saving operation time.

[0030] Combination Figure 1 and Figure 2 As shown, as a further step, the two sets of sample tube hole groups 4 are a large-size sample tube hole group 41 and a small-size sample tube hole group 42, respectively. Each of the large-size sample tube hole group 41 and the small-size sample tube hole group 42 is provided with at least one sample tube hole. The plane where the port of the sample tube hole in the large-size sample tube hole group 41 is located is perpendicular to the plane where the port of the sample tube hole in the small-size sample tube hole group 42 is located. The sample tube holes in the large-size sample tube hole group 41 and the sample tube holes in the small-size sample tube hole group 42 are connected and correspond one-to-one.

[0031] Specifically, the large-size sample tube group 41 and the small-size sample tube group 42 each have multiple sample tube holes, and the multiple sample tube holes in each group are distributed sequentially along the length of the magnetic frame body 1. The number of sample tube holes in the large-size sample tube group 41 is the same as that in the small-size sample tube group 42, and they are connected one-to-one. The illustration in this article uses 14 sample tube holes as an example, but in actual use, it includes, but is not limited to, the 14 shown in the figure.

[0032] Combination Figure 2 As shown, as a further step, the two sets of magnet support platforms 6 are a small-size tube support area 610 and a large-size tube support area 620, respectively. The small-size tube support area 610 is composed of multiple first limiting platforms 611 and multiple first bearing platforms 612. The plane where the first limiting platforms 611 are located is perpendicular to the plane where the first bearing platforms 612 are located. The large-size tube support area 620 is composed of multiple second limiting platforms 621 and multiple second bearing platforms 622. The plane where the second limiting platforms 621 are located is perpendicular to the plane where the second bearing platforms 622 are located. The plane where the first limiting platforms 611 are located is perpendicular to the plane where the second limiting platforms 621 are located.

[0033] Specifically, each magnetic frame body 1 is provided with multiple first limiting platforms 611, first bearing platforms 612, second limiting platforms 621, and second bearing platforms 622. Thus, when the four magnetic frame bodies 1 are symmetrically distributed around the long strip magnet block 2 and form a closed ring structure, a small-size tube support area 610 can be formed between the multiple corresponding first limiting platforms 611 and first bearing platforms 612, and a large-size tube support area 620 can be formed between the multiple corresponding second limiting platforms 621 and second bearing platforms 622. The small-size tube support area 610 and the large-size tube support area 620 can form a cross shape in space.

[0034] Combination Figure 7 As shown, the long bar magnet 2 has two relatively strong magnetic force surfaces 21 (two surfaces: N pole and S pole), and the long bar magnet 2 adopts an existing commercially available continuous magnet block.

[0035] Combination Figure 3 and Figure 4 As shown, when the long magnetic block 2 is in the first working position, the long magnetic block 2 is located in the small-size tube support area 610, and the strongest magnetic surface 21 of the long magnetic block 2 is in contact with the first limiting stage 611. At this time, the strongest magnetic surface 21 of the long magnetic block 2 can be parallel to the axis of the small-size sample tube hole group 42, and there is no obstruction between the small-size sample tube hole groups 42 on the two magnetic frame bodies 1, which is conducive to the insertion of small-size tubes into the small-size sample tube hole group 42, ensuring that the strongest magnetic surface 21 of the long magnetic block 2 has the maximum attraction force on the material in the small-size sample tube, effectively reducing magnetic loss, improving magnetic separation efficiency, and achieving ideal magnetic attraction effect.

[0036] Combination Figure 5 and Figure 7 As shown, when the long magnet 2 is in the second working position, the long magnet 2 is located in the large-size tube support area 620, and the strongest magnetic surface 21 of the long magnet 2 is in contact with the second limiting stage 621. At this time, the strongest magnetic surface 21 of the long magnet 2 can be parallel to the axis of the large-size sample tube hole group 41, and there is no obstruction between the large-size sample tube hole groups 41 on the two magnetic frame bodies 1, which is conducive to the insertion of large-size tubes into the large-size sample tube hole group 41, ensuring that the strongest magnetic surface 21 of the long magnet 2 has the maximum attraction force on the material in the large-size sample tube, effectively reducing magnetic loss, improving magnetic separation efficiency, and achieving ideal magnetic attraction effect.

[0037] The main body of the magnetic rack 1 integrates sample tube holes of two sizes, which can be adapted to sample tubes of different sizes at the same time, meeting the diverse sample processing needs in biomedical experiments, eliminating the need for frequent replacement of the magnetic rack, and improving the convenience of experimental operation.

[0038] Combination Figure 2As shown, as a further step, the two sets of fixed pipe hole groups 5 are respectively the first pipe hole group 510 and the second pipe hole group 520. The first pipe hole group 510 includes pipe holes 511 symmetrically arranged at both ends of the magnetic frame body 1. A first positioning groove 7 is provided on the pipe hole 511 at one end of the magnetic frame body 1, and a first protrusion 8 adapted to the first positioning groove 7 is provided on the pipe hole 511 at the other end of the magnetic frame body 1. The second pipe hole group 520 includes pipe holes 521 symmetrically arranged at both ends of the magnetic frame body 1, and the pipe hole 511 is located on one side of the pipe hole 521. The axis of the pipe hole 511 is perpendicular to the axis of the pipe hole 521. A second positioning groove 9 is provided on the pipe hole 521 at one end of the magnetic frame body 1, and a second protrusion 10 adapted to the first positioning groove 7 is provided on the pipe hole 521 at the other end of the magnetic frame body 1.

[0039] Specifically, the first positioning groove 7 and the first protrusion 8 are located on the same side of the first tube hole group 510, and the second positioning groove 9 and the second protrusion 10 are located on the same side of the second tube hole group 520. Based on this, when the four magnetic frame bodies 1 are symmetrically distributed around the long bar magnet block 2 and form a closed loop structure, the first tube hole group 510 on two adjacent magnetic frame bodies 1 can cooperate with the first protrusion 8 through the first positioning groove 7. At the same time, the second tube hole group 520 on two adjacent magnetic frame bodies 1 can cooperate with the second protrusion 10 through the second positioning groove 9, ensuring the stability of the four magnetic frame bodies 1 after connection.

[0040] Furthermore, the second pipe hole 521 with the second positioning groove 9 and the first pipe hole 511 with the first protrusion 8 are both located at the same end of the magnetic frame body 1, and the second pipe hole 521 with the second protrusion 10 and the first pipe hole 511 with the first positioning groove 7 are both located at the same end of the magnetic frame body 1.

[0041] Specifically, when the four magnetic frame bodies 1 are symmetrically distributed around the long magnetic block 2 to form a closed loop structure, the four magnetic frame bodies 1 need to be horizontally mirrored to ensure that they can form a closed loop. Therefore, the second pipe hole 521 with the second positioning groove 9 and the first pipe hole 511 with the first protrusion 8 are both located at the same end of the magnetic frame body 1, and the second pipe hole 521 with the second protrusion 10 and the first pipe hole 511 with the first positioning groove 7 are both located at the same end of the magnetic frame body 1, which facilitates the closed loop assembly of the four magnetic frame bodies 1.

[0042] Working principle and usage process of this utility model: Combination Figures 1-4 As shown in the illustration, during assembly: Step 1: Prepare four magnetic rack bodies 1, one long bar magnet 2, and eight fixing tubes 3. Place two magnetic rack bodies 1 horizontally and symmetrically on the experimental table as the bottom of the split magnetic rack. Step 2: The two bottom magnetic frame bodies 1 are initially fixed by the cooperation of the second positioning grooves 9 and the second protrusions 10 on the two magnetic frame bodies 1; then, two fixing tubes 3 are inserted into the second tube hole group 520 of the two bottom magnetic frame bodies 1 respectively to achieve the overall fixation of the two bottom magnetic frame bodies 1. Step 3: Place the long bar magnet 2 vertically in the small-sized tube support area 610 in the center of the bottom magnetic frame body 1, that is, the small magnetic surface of the long bar magnet 2 contacts the first support platform 612, and the strongest magnetic surface 21 of the long bar magnet 2 contacts the first limiting platform 611, ensuring that the strongest magnetic surface 21 is perpendicular to the horizontal plane of the experimental platform. Step 4: Place the other two magnetic frame bodies 1 horizontally in a mirror image and fix them together by the cooperation of the second positioning groove 9 and the second protrusion 10 and the insertion of the two fixing tubes 3. Then, place the two fixed magnetic frame bodies 1 directly above the bottom two magnetic frame bodies 1 and fix the upper and lower magnetic frame bodies 1 by the cooperation of the first positioning groove 7 and the first protrusion 8. Then, take four fixing tubes 3 and insert them into the corresponding first tube hole group 510 to complete the overall assembly of the four magnetic frame bodies 1 and finally form a complete split magnetic frame.

[0043] When using: During the magnetic separation experiment, the detachable magnetic rack assembled through the above steps can be adapted to small sample tubes. It is only necessary to put the small sample tube containing the experimental sample into the small sample tube hole group 42 to ensure that the strongest magnetic surface 21 of the long bar magnet block 2 has the maximum attraction to the material in the small sample tube, thereby improving the magnetic separation efficiency. When it is necessary to remove a set of sample tubes, there is no need to disassemble the entire magnetic frame. Simply pull out the fixing tube 3 on the corresponding magnetic frame body 1 by hand, and the magnetic frame body 1 along with the sample tube in its sample tube hole can be removed together to achieve rapid demagnetization. Then, the experimenter can directly take out the sample tube for subsequent experimental operations.

[0044] Combination Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, in another embodiment, during assembly: Step 1: Prepare four magnetic rack bodies 1, one long bar magnet 2, and eight fixing tubes 3. Place two magnetic rack bodies 1 horizontally and symmetrically on the experimental table as the bottom of the split magnetic rack. Step 2: The two bottom magnetic frame bodies 1 are initially fixed by the cooperation of the first positioning groove 7 and the first protrusion 8 on the two magnetic frame bodies 1; then, two fixing tubes 3 are inserted into the first tube hole group 510 of the two bottom magnetic frame bodies 1 respectively to achieve the overall fixation of the two bottom magnetic frame bodies 1. Step 3: Place the long bar magnet 2 vertically in the large-size tube support area 620 in the center of the bottom magnetic frame body 1, that is, the small magnetic surface of the long bar magnet 2 contacts the second support platform 622, and the strongest magnetic surface 21 of the long bar magnet 2 contacts the second limiting platform 621, ensuring that the strongest magnetic surface 21 is perpendicular to the horizontal plane of the experimental platform. Step 4: Place the other two magnetic frame bodies 1 horizontally in a mirror image and fix them together by the cooperation of the first positioning groove 7 and the first protrusion 8 and the insertion of the two fixing tubes 3. Then, place the two fixed magnetic frame bodies 1 directly above the bottom two magnetic frame bodies 1 and fix the upper and lower magnetic frame bodies 1 by the cooperation of the second positioning groove 9 and the second protrusion 10. Then, take four fixing tubes 3 and insert them into the corresponding second tube hole group 520 to complete the overall assembly of the four magnetic frame bodies 1 and finally form a complete split magnetic frame.

[0045] When using: During the magnetic separation experiment, the detachable magnetic rack assembled through the above steps can be adapted to large-size sample tubes. It is only necessary to put the large-size sample tube containing the experimental sample into the small-size sample tube hole group 42 to ensure that the strongest magnetic surface 21 of the long bar magnet block 2 has the maximum attraction to the material in the large-size sample tube, thereby improving the magnetic separation efficiency. When it is necessary to remove a set of sample tubes, there is no need to disassemble the entire magnetic frame. Simply pull out the fixing tube 3 on the corresponding magnetic frame body 1 by hand, and the magnetic frame body 1 along with the sample tube in its sample tube hole can be removed together to achieve rapid demagnetization. Then, the experimenter can directly take out the sample tube for subsequent experimental operations.

[0046] In summary, the technical effects achieved by this utility model are as follows: 1. By symmetrically assembling four magnetic frame bodies 1 around the sample tube, the matching long magnetic block 2 is fixed around the sample tube. When the long magnetic block 2 is placed in the small tube support area 610 or the large tube support area 620, it can ensure that the strongest magnetic surface 21 of the long magnetic block 2 is completely attached to the sample tube, effectively reducing magnetic loss and ensuring that the attraction of the magnet to the material in the sample tube is maximized, thus significantly improving the magnetic separation efficiency.

[0047] 2. The magnetic frame body 1 adopts an integrated molding structure, which ensures a compact and stable structure without the need for complex splicing; and the fixing tube hole group 5 can be adapted to commercial sample tubes without the need for additional special screws, which not only reduces experimental costs, but also simplifies the assembly and disassembly process and saves operation time.

[0048] 3. The magnetic rack body 1 integrates two sizes of sample tube holes, which can be adapted to different sizes of sample tubes at the same time, meeting the needs of various sample processing in biomedical experiments. This eliminates the need for frequent replacement of the magnetic rack and improves the convenience of experimental operation.

[0049] 4. When it is necessary to remove the sample tube, simply pull out the fixing tube 3 on the corresponding magnetic frame body 1 to remove the magnetic frame body 1, thereby achieving rapid demagnetization without the need for complete disassembly of the equipment. This is convenient to operate and avoids interference to the sample caused by complete disassembly, ensuring the stability of the experimental sample.

[0050] In this invention, the term "plural" refers to two or more items unless otherwise expressly defined. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] It should be noted that when a component is referred to as being "assembled on," "mounted on," "fixed to," or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0052] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A detachable magnetic frame, characterized in that, It includes four magnetic frame bodies (1), long magnetic blocks (2) and eight fixing tubes (3). Each magnetic frame body (1) is provided with two sets of sample tube hole groups (4), two sets of fixing tube hole groups (5) and two sets of magnetic support platform groups (6). The two sets of sample tube hole groups (4) are distributed sequentially along the length direction of the magnetic frame body (1). The eight fixing tubes (3) are used to be inserted into the two sets of fixing tube hole groups (5) to connect the four magnetic frame bodies (1). The long magnet block (2) is located between the four magnetic frame bodies (1) and has a first working position and a second working position. When the long magnet block (2) is in the first working position, the long magnet block (2) is located in a set of magnet support platform groups (6). When the long magnet block (2) is in the second working position, the long magnet block (2) is located in another set of magnet support platform groups (6). The four magnetic frame bodies (1) are symmetrically distributed around the long strip magnet block (2) and form a closed ring structure.

2. A detachable magnetic frame according to claim 1, characterized in that, The two groups of sample tube hole groups (4) are a large-size sample tube hole group (41) and a small-size sample tube hole group (42). Each of the large-size sample tube hole group (41) and the small-size sample tube hole group (42) is provided with at least one sample tube hole. The plane where the port of the sample tube hole in the large-size sample tube hole group (41) is located is perpendicular to the plane where the port of the sample tube hole in the small-size sample tube hole group (42). The sample tube holes in the large-size sample tube hole group (41) and the sample tube holes in the small-size sample tube hole group (42) correspond one-to-one and are connected.

3. A detachable magnetic frame according to claim 1, characterized in that, The two sets of magnet support platforms (6) are respectively the small-size tube support area (610) and the large-size tube support area (620). The small-size tube support area (610) is composed of multiple first limiting platforms (611) and multiple first bearing platforms (612), and the plane where the first limiting platforms (611) are located is perpendicular to the plane where the first bearing platforms (612) are located. The large-size pipe support area (620) is composed of multiple second limiting platforms (621) and multiple second bearing platforms (622), and the plane where the second limiting platform (621) is located is perpendicular to the plane where the second bearing platform (622) is located.

4. A detachable magnetic frame according to claim 3, characterized in that, The plane where the first limiting platform (611) is located is perpendicular to the plane where the second limiting platform (621) is located.

5. A detachable magnetic frame according to claim 4, characterized in that, The long bar magnet block (2) has a relatively strongest magnetic surface (21). When the long magnet block (2) is in the first working position, the long magnet block (2) is located in the small-size tube support area (610), and the strongest magnetic surface (21) of the long magnet block (2) is in contact with the first limiting platform (611); When the long magnet block (2) is in the second working position, the long magnet block (2) is located in the large-size tube support area (620), and the strongest magnetic surface (21) of the long magnet block (2) is in contact with the second limiting platform (621).

6. A detachable magnetic frame according to claim 1, characterized in that, The two sets of fixed pipe hole groups (5) are the first pipe hole group (510) and the second pipe hole group (520), respectively. The first group of tube holes (510) includes tube holes (511) symmetrically arranged at both ends of the magnetic frame body (1). The second set of tube holes (520) includes two tube holes (521) symmetrically arranged at both ends of the magnetic frame body (1); The first hole (511) is located on one side of the second hole (521), and the axis of the first hole (511) is perpendicular to the axis of the second hole (521).

7. A detachable magnetic frame according to claim 6, characterized in that, A first positioning groove (7) is provided on the tube hole (511) at one end of the magnetic frame body (1), and a first protrusion (8) adapted to the first positioning groove (7) is provided on the tube hole (511) at the other end of the magnetic frame body (1).

8. A detachable magnetic frame according to claim 7, characterized in that, A second positioning groove (9) is provided on the second tube hole (521) at one end of the magnetic frame body (1), and a second protrusion (10) adapted to the first positioning groove (7) is provided on the second tube hole (521) at the other end of the magnetic frame body (1).

9. A detachable magnetic frame according to claim 8, characterized in that, The second tube hole (521) with the second positioning groove (9) and the first tube hole (511) with the first protrusion (8) are located at the same end of the magnetic frame body (1), and the second tube hole (521) with the second protrusion (10) and the first tube hole (511) with the first positioning groove (7) are located at the same end of the magnetic frame body (1).

10. A detachable magnetic frame according to claim 1, characterized in that, The magnetic frame body (1) is integrally formed with two sets of sample tube hole groups (4), two sets of fixed tube hole groups (5) and two sets of magnet support platform groups (6).

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